content: /*
   * Copyright 2016-present David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.rxjava3.operators;
  
  import java.io.IOException;
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.Flowable;
  import io.reactivex.rxjava3.internal.schedulers.ImmediateThinScheduler;
  import io.reactivex.rxjava3.schedulers.*;
  import io.reactivex.rxjava3.subscribers.TestSubscriber;
  
  public class FlowableRequestObserveOnTest {
  
      @Test
      public void normal() {
          Flowable.range(1, 10)
          .compose(FlowableTransformers.requestObserveOn(Schedulers.computation()))
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
      }
  
      @Test
      public void take() {
          Flowable.range(1, 10)
          .compose(FlowableTransformers.requestObserveOn(Schedulers.computation()))
          .take(5)
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(1, 2, 3, 4, 5);
      }
  
      @Test
      public void error() {
          Flowable.error(new IOException())
          .compose(FlowableTransformers.requestObserveOn(Schedulers.computation()))
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertFailure(IOException.class);
      }
  
      @Test
      public void backpressured() throws Exception {
          TestScheduler testSched = new TestScheduler();
          TestSubscriber<Integer> ts = Flowable.range(1, 2)
          .compose(FlowableTransformers.<Integer>requestObserveOn(testSched))
          .test(0L);
  
          testSched.advanceTimeBy(1, TimeUnit.MILLISECONDS);
  
          ts.assertEmpty();
  
          ts.requestMore(1);
  
          testSched.advanceTimeBy(1, TimeUnit.MILLISECONDS);
  
          ts.assertValue(1);
  
          ts.requestMore(1);
  
          testSched.advanceTimeBy(1, TimeUnit.MILLISECONDS);
  
          ts.assertResult(1, 2);
  
          ts.requestMore(1);
  
          testSched.advanceTimeBy(1, TimeUnit.MILLISECONDS);
  
          ts.assertResult(1, 2);
      }
  
      @Test
      public void requestAfterCompleteImmediate() throws Exception {
          TestSubscriber<Integer> ts = Flowable.range(1, 2)
          .compose(FlowableTransformers.<Integer>requestObserveOn(ImmediateThinScheduler.INSTANCE))
          .test(0L);
  
          ts.assertEmpty();
  
          ts.requestMore(1);
  
          ts.assertValue(1);
  
          ts.requestMore(1);
  
          ts.assertResult(1, 2);
  
          ts.requestMore(1);
  
          ts.assertResult(1, 2);
      }
  }
  